Visual experimental device for low-temperature fluid condensation and flow

Abstract

The invention relates to the field of low-temperature fluid flow experiments and discloses a visual experimental device for low-temperature fluid condensation and flow. The visual experimental devicecomprises a loop heat pipe, a refrigerator in contact with a condenser and a heat insulation system surrounding at least part of the loop heat pipe and at least part of the refrigerator, wherein the loop heat pipe comprises the condenser and an evaporator which are in closed connection to form a loop; at least part of the heat insulation system is pervious to light the condenser comprises a bottomplate and a photo-permeable cover plate, channels are formed in the bottom plate, the photo-permeable cover plate is attached to the bottom plate and defines a condensation channel together with thechannels in the bottom plate. The visual experimental device for low-temperature fluid condensation and flow can visualize the condensation and flow process of low-temperature fluid, and the structural strength problem caused by cold and heat shock, large difference in thermal expansion coefficients of structural members and the like is also solved.

Description

technical field [0001] The invention relates to the field of cryogenic fluid flow experiments, in particular to an experimental device for visualization of cryogenic fluid condensation and flow. Background technique [0002] Today, with the rapid development of aerospace, superconducting technology, and electronic devices, cryogenic cooling technology is facing more severe challenges. The application of cryogenic fluids as cooling media or heat transfer media is becoming more and more extensive. During the application process of cryogenic fluids, vapor-liquid phase transformation heat processes such as evaporation or condensation inevitably occur, and the heat exchange process is accompanied by the low-temperature gas-liquid two-phase flow phenomenon. [0003] The physical parameters of cryogenic working fluids are different from those of normal temperature working fluids. For example, the surface tension and latent heat of vaporization of low temperature working fluids such...

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Problems solved by technology

[0006] The object of the present invention is to provide an experimental device for visualizing the condensation and flow of cryogenic fluid, which is used to visualize the condensation and flow process of low-temperature fluid, and solve the structural strength problems caused by thermal shock and large difference in thermal expansion coefficient of structural parts. Solve flow actuation and flow rate regulation of cryogenic fluids independent of pumps or gravity

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